<form method="get" action="<?php echo home_url(); ?>/">
<div class="search">
	<input type="text" class="search-text" name="s" value="<?php echo (is_search()) ? esc_attr(get_search_query()) : 'Search'; ?>" title="Enter keyword(s), then press enter" onfocus="if(this.value==this.defaultValue)this.value='';" onblur="if(this.value=='')this.value=this.defaultValue;" />
	<input type="image" class="search-submit" src="<?php echo get_template_directory_uri(); ?>/images/search_icon.gif" alt="Submit" title="Click to submit form" />
</div>
</form>